Home / 3,079.16-4,249.24-1,681.90

Finding the Fourth Proportional to 3,079.16, 4,249.24 and 1,681.90

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Solution

The fourth proportional to 3,079.16, 4,249.24 and 1,681.90 is: 2,321.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,079.16 : 4,249.24 = 1,681.90 : x
  2. Step 2: Convert to fraction form
    3,079.16/4,249.24 = 1,681.90/x
  3. Step 3: Cross multiply
    3,079.16x = 4,249.24 × 1,681.90
  4. Step 4: Simplify right side
    3,079.16x = 7,146,796.76
  5. Step 5: Solve for x
    x = 7,146,796.76/3,079.16
  6. Step 6: Final answer
    x = 2,321.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.